FREQUENCY ENCODED DIGITAL TRANSMISSION WITH EACH ENCODED FREQUENCY CONTINUOUSLY SWEPT OVER A BAND OF FREQUENCIES
United States Patent 3493865
US Patent References:
Frequency discriminator
- - 2392693
Wobbled radio carrier communication system
- - 2422664
Radiotelegraph system
- - 2715677
Pulse-code communication system
- - 2839604
Reduction of multipath effects by frequency shift
- - 3020399
Frequency discriminator
- - 2392693
Wobbled radio carrier communication system
- - 2422664
Radiotelegraph system
- - 2715677
Pulse-code communication system
- - 2839604
Reduction of multipath effects by frequency shift
- - 3020399
Inventors:
Miller, Ralph L.
Publication Date:
02/03/1970
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Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
Other Classes:
375/136, 455/65, 375/285, 375/135, 375/259, 455/66.100
International Classes:
H04L27/10; H04B7/00; H04B1/00
US Patent References:
| 3117305 | Frequency shift transmission system |